\begin{table}[h!]

\caption{\label{tab:tipping_points}Tipping point analysis results}
\centering
\begin{threeparttable}
\begin{tabular}[t]{lrrr}
\toprule
\multicolumn{1}{c}{ } & \multicolumn{3}{c}{Tipping points (in SD units)} \\
\cmidrule(l{3pt}r{3pt}){2-4}
Outcome & Positive but Not Sign. & Estimate below 0 & Negative and Sign.\\
\midrule
Accuracy Discernment & 1.38 & 1.61 & 1.85\\
Sharing Discernment & 0.99 & 1.22 & 1.46\\
Source Discernment & 1.07 & 1.31 & 1.55\\
Health Preferences & 1.12 & 1.37 & 1.62\\
Engagement Attitude & 0.54 & 0.86 & 1.2\\
Engagement Behavior & -- & 0.17 & 0.48\\
Awareness & -- & -- & 0.16\\
\bottomrule
\end{tabular}
\begin{tablenotes}[para]
\small
\item \textit{Note:} 
\item This table summarizes the tipping points at which the treatment effect loses statistical significance, reaches zero, and becomes significantly negative. The values represent how many (control-group) SD units below the imputed values the treatment group outcomes would need to be in each case. Models include library-spillover FEs.
\end{tablenotes}
\end{threeparttable}
\end{table}
